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PDF MAX4910 Data sheet ( Hoja de datos )
| Número de pieza | MAX4910 | |
| Descripción | Clickless Audio Switches | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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19-3854; Rev 0; 2/06
www.DataSheet4U.com
Quad-SPDT, Clickless Audio Switches
with Negative Signal Handling
General Description
The MAX4910/MAX4911/MAX4912 quad, single-
pole/double-throw (SPDT), clickless audio switches fea-
ture negative signal capability that allows signals as low
as VCC-5.5V to pass through without distortion. These
analog switches have a low on-resistance, low supply
current, and operate from a single +1.8V to +5.5V supply.
The MAX4910/MAX4911/MAX4912 have internal shunt
resistors that automatically discharge the capacitance at
the normally open (NO) and normally closed (NC) termi-
nals when they are not connected. The MAX4910/
MAX4911 have shunt resistors on all NO and NC terminals
and the MAX4912 has shunt resistors on all NO, NC1, and
NC3 terminals. These shunt resistors reduce click-and-
pop sounds that occur when switching audio signals
between precharged points. A break-before-make feature
further reduces popping.
The MAX4910/MAX4912 control the switches in pairs with
two control bits CB1 and CB2. The MAX4911 has one con-
trol bit to switch all four switches and an enable pin EN to
put the switches in a high-impedance mode. The MAX4912
has two terminals without shunt resistors for switching
applications that do not require pre-discharge switching.
The MAX4910/MAX4911/MAX4912 are available in a tiny
16-pin TQFN-EP (3mm x 3mm) package and operate
over the -40°C to +85°C extended temperature range.
Applications
Cell Phones
PDAs and Handheld Devices
Notebook Computers
MP3 Players
TOP VIEW
COM4 NO4 CB2 NC3
12 11 10 9
NC4 13
8 COM3
VCC 14
NO1 15
MAX4910
MAX4912
7 NO3
6 GND
COM1 16 +
5 NC2
1234
NC1 CB1 NO2 COM2
THIN QFN
3 mm x 3 mm
Features
♦ Distortion-Free Negative Signal Throughput Down
to VCC - 5.5V
♦ Internal Shunt Resistors Reduce Click-and-Pop
Sounds
♦ High PSRR Reduces Supply Noise
♦ Low On-Resistance (0.37Ω)
♦ 0.1Ω Channel-to-Channel Matching
♦ 0.35Ω On-Resistance Flatness
♦ +1.8V to +5.5V Single-Supply Voltage
♦ -80dB Crosstalk (20kHz)
♦ -90dB Off-Isolation (20kHz)
♦ 0.05% Total Harmonic Distortion
♦ Enable Control (MAX4911)
♦ 10nA Leakage Current
♦ 150nA Supply Current
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
TOP PKG
MARK CODE
MAX4910ETE+ -40°C to +85°C 16 TQFN-EP** ADY T1633-4
MAX4911ETE+* -40°C to +85°C 16 TQFN-EP** ADZ T1633-4
MAX4912ETE+* -40°C to +85°C 16 TQFN-EP** AEA T1633-4
+ Denotes lead-free package.
*Future product—contact factory for availability.
**EP = Exposed pad.
Typical Operating Circuit appears at end of data sheet.
Pin Configurations
COM4 NO4 EN NC3
12 11 10 9
NC4 13
8 COM3
VCC 14
NO1 15
MAX4911
7 NO3
6 GND
COM1 16 +
5 NC2
1234
NC1 CB NO2 COM2
THIN QFN
3 mm x 3 mm
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1 page  
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Quad-SPDT, Clickless Audio Switches
with Negative Signal Handling
Typical Operating Characteristics (continued)
(VCC = 3.0V, TA = +25°C, unless otherwise noted.)
NO TURN-ON/NC TURN-OFF TIME
vs. SUPPLY VOLTAGE
100
90
80
NO TURN-ON TIME
70
60
50
40
30
20
NC TURN-OFF TIME
10
1.8 2.3 2.8 3.3 3.8 4.3
SUPPLY VOLTAGE (V)
4.8
5.3
NO TURN-ON/NC TURN-OFF TIME
vs. TEMPERATURE
100
90 NO TURN-ON TIME
80
70
60
50
NC TURN-OFF TIME
40
30
20
10
0
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
NC TURN-ON/NO TURN-OFF TIME
vs. TEMPERATURE
370
360
350
340 NC TURN-ON TIME
330
320
310
300
290 NO TURN-OFF TIME
280
270
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
LOGIC THRESHOLD
vs. SUPPLY VOLTAGE
2.0
1.6
VCB RISING
1.2
0.8
0.4 VCB FALLING
0
1.8 2.3 2.8 3.3 3.8 4.3 4.8 5.3
SUPPLY VOLTAGE (V)
SUPPLY CURRENT
vs. LOGIC INPUT VOLTAGE
2.0
VCC = +4.3V
1.5
1.0
0.5
CHARGE INJECTION
vs. COMMON VOLTAGE
900
700
500
300
VCC = 2.0V
100
VCC = 5.0V
-100
0
0 0.5 1 1.4 2 3 4
DIGITAL INPUT VOLTAGE (V)
5
-300
-3 -2 -1 0 1 2 3 4 5
VCOM (V)
_______________________________________________________________________________________ 5
5 Page 
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Quad-SPDT, Clickless Audio Switches
with Negative Signal Handling
Test Circuits/Timing Diagrams (continued)
+5V 10nF
0V OR VCC CB_
VCC
COM_
MAX4910
MAX4911
NC_ MAX4912
NO_
50Ω GND
VIN
VOUT
NETWORK
ANALYZER
50Ω 50Ω
MEAS
50Ω
REF
50Ω
OFF-ISOLATION = 20log
VOUT
VIN
ON-LOSS
=
20log
VOUT
VIN
CROSSTALK = 20log
VOUT
VIN
MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINAL ON EACH SWITCH.
ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_ TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
Figure 5. On-Loss, Off-Isolation, and Crosstalk
CAPACITANCE
METER
f = 1MHz
10nF VCC
VCC
COM_
NC_ or
NO_
GND
MAX4910
MAX4911
MAX4912
CB_
VIL OR VIH
Figure 6. Channel Off-/On-Capacitance
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet MAX4910.PDF ] | |
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